Cartagena to Iruña de Oca trains might be a good value for money solution: travelling in Spain by train is often rather cheap and faster than taking a bus indeed Trains leave from Cartagena and arrive at Nanclares/Langraiz every about 12 hours on average. If travelling with Renfe, you need to know the Cartagena to Iruña de Oca train schedule: the first train leaves at 07:40, while the last ride is at 07:40. A Cartagena to Iruña de Oca train cost about 73.18 €. But how long is the train ride from Cartagena to Iruña de Oca? Your journey takes 1 day on average.